[1]刘红霞,杨春.介孔TiO2的合成及光催化性能研究[J].南京师大学报(自然科学版),2009,32(01):62-67.
 Liu Hongxia,Yang Chun.Synthesis and Photocatalytic Performance of Mesoporous TiO2[J].Journal of Nanjing Normal University(Natural Science Edition),2009,32(01):62-67.
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介孔TiO2的合成及光催化性能研究()
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《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

卷:
第32卷
期数:
2009年01期
页码:
62-67
栏目:
化学
出版日期:
2009-03-30

文章信息/Info

Title:
Synthesis and Photocatalytic Performance of Mesoporous TiO2
作者:
刘红霞;杨春;
南京师范大学化学与环境科学学院, 江苏南京210097
Author(s):
Liu HongxiaYang Chun
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
关键词:
介孔二氧化钛 模板剂脱除 光催化性能
Keywords:
m esoporous TiO2 rem ova l o f temp la te photocata ly sis
分类号:
O643.36
摘要:
采用P123为模板剂,TiCl4和钛酸异丙酯为混合钛源,合成了介孔TiO2材料,并用焙烧和乙醇回流的方法进行脱模.用BET、TEM、XRD、TG-DTA等手段对TiO2材料进行了表征,考察了它们对水溶性偶氮染料甲基橙的光催化降解性能.结果表明,高温焙烧脱模的样品能形成介孔结构,且380℃焙烧6h的样品能晶化为锐钛矿相.而乙醇回流48h脱模的样品,模板剂脱除不彻底,且没有锐钛矿相和介孔结构形成.在对甲基橙的光催化降解中,起关键作用的不是催化剂的孔结构特征,而是其晶态.具有锐钛矿相的介孔TiO2有很高的光催化
Abstract:
Them esoporous T iO2 w as synthesized by using T iC l4 and titanium isopropox ide as the T i precursors and P123 as a temp la te, fo llowed by calc ination o r re flux w ith ethano l to rem ove tem plate. The sam ples w ere characterized by BET, TEM, XRD and TG-DTA techn iques. The photo ca talytic degradation o fm e thy l o rang e, a w ater-so luble azo-dye, ca talyzed by these T iO2 sam ples w as also inv estig ated. The results indicate tha t mesostructure can be form ed upon the ca lcina tion, and ana tase crysta l phase is ob tained when the sam ple is ca lcined at 380℃ fo r 6 h. H owever them esostruc-ture and the anatase cry sta l phase canno t be form ed on the reflux ed sam ple, in wh ich the tem plate cannot be rem oved thoroughly. In the pho to-degrada tion o fm ethyl orange, the crysta lline sta te ra ther than the m esostructure o fT iO2 plays a v ita l role fo r the ca talysis activ ity. M esopo rous T iO2 w ith anatase crysta l phase possesses very h igh photocata lysis activ i ty, wh ich is com pa rable w ith P25 pho to ca talyst.

参考文献/References:

[ 1] 王怡中, 符雁, 汤鸿霄. 甲基橙溶液多相光催化降解研究[ J] . 环境科学, 1998, 19 ( 1): 1-4.
[ 2] H offm annM R, M artin S T, ChoiW, et a.l Env ironm enta l app lications o f sem iconductor photocata lysis [ J]. Chem Rev,
1995, 95( 1): 69-96.
[ 3] Ko rm ann C, Bahnem ann D W, Ho ffm annM R. Prepara tion and charac terization of quantum-size titanium d iox ide [ J]. J
Phys Chem, 1988, 92 ( 18): 5 196-5 201.
[ 4] K raeutler B, Bard A J. H e terogeneous pho tocata ly tic decom pos ition of satu rated ca rboxy lic acids on T iO2 pow der. Decarboxy-
lativ e route to alkanes [ J]. J Am Chem Soc, 1978, 100( 19): 5 985-5 992.
[ 5] Ohtani B, Adzum a S, N ish im oto S, et a.l Pho tocata ly tic degrada tion o f po lye thy lene film by inco rpo ra ted extra-fine partic les
o f titan ium diox ide [ J]. Po lyme rDegradation and Stab ility, 1992, 35( 1): 53-60.
[ 6] Sc la fan iA, Palm isano L, Sch iave lloM. Influence o f the prepara tionm e thods o fT iO2 on the photocata lytic deg rada tion of phe-
no l in aqueous d ispersion [ J]. J Phys Chem, 1990, 94( 2): 829-832.
[ 7] Ohtani B, Okug aw aY, N ishim oto S, e t a.l Photoca talytic activ ity of T iO2 powders suspended in aqueous silver nitra te so lu
tion: corre lation w ith pH - dependent surface structures [ J]. J Phys Chem, 1987, 91( 13) : 3 350-3 355.
[ 8] 张雪红, 罗来涛. 室温水解法制备介孔二氧化钛的表征及应用[ J]. 感光科学与光化学, 2005, 23( 1): 14-20.
[ 9] 林会亮, 周国伟, 刘颖, 等. 介孔T iO2 的制备及其对漂白废水中对氯苯酚的降解研究[ J] . 纳米科技, 2006, 3( 3): 27-
30.
[ 10] Ba ll P C, Evans R. Temperature dependence o f g as adsorption on a m esopo rous so lid: capillary cr itica lity and hysteresis
[ J]. Langm uir, 1989, 5( 3): 714-723.
[ 11] Cho i S Y, M am arkM, Coom bs N, et a.l Therma lly stable two-dim ensiona l hexagona l mesoporous nanocrysta lline ana tase
m eso-nc- TiO2: bu lk and crack-free th in film m orpholog ies [ J]. Adv Func tM ater, 2004, 14( 4): 335-344.
[ 12] Zhao L L, Yu Y, Song L i X, e t a.l Preparation o fm esoporous titan ia film using non ionic trib lo ck copo lym er as surfactant
temp la te[ J]. App l Cata lA: Gen, 2004, 263( 2): 171-177.
[ 13] 谭小萍, 王国生, 汤克敏. 光催化氧化法用于垃圾渗滤液深度处理主要影响因素的试验研究[ J]. 环境科学动态,
1999( 1): 28-30.
[ 14] 方世杰, 徐明霞, 黄卫友, 等. 纳米T iO2 光催化降解甲基橙[ J]. 硅酸盐学报, 2001, 29( 5): 439-442.

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 20473037)、江苏省教育厅自然科学基金( 04K JB150069)、国家人事部留学人员科技活动基金
( 2005103SB9BH 51)资助项目.
通讯联系人: 杨 春, 研究员, 研究方向: 多相催化研究. E-m ail:yangchun@ n jnu. edu. cn
更新日期/Last Update: 2013-04-23